Freene, H. 1987 25 July (continued) handling in the dark was thrilling and copious cloacal gland secretion, although late indoors it readily gaped and stuck. After we parted, Jan and David found an adult Micrurus alleni crawling under the boardwalk on Senderos Cartagena, just before it hits the water, at 2200 hrs. 26 July Photographed animals this morning. The Polyergus guttatus could switch brown to green w/in seconds, jumped w/out vegetation to the ground from a height of >1m, and could move fairly rapidly at times. I never saw it curl the tail round a branch, but there was certainly contact along its length. Interestingly, when the animal switched to green the tail remained reddish-brown. It repeatedly gaped and extended dewlap when threatened w/ a finger. Phil Davies told me the plant it was on is Helioscaphus (Tiliaceae). SV170, tail 550 mm, 77g. The claws are exceptionally sharp! The Micrurus alleni constantly tried to crawl away rapidly w/ broad curves, but repeatedly exhibited a suite of responses when restrained. If it halted because someone appeared in front, the animal froze w/ head jerked back in a tight, flat S-coil. This appeared to be "tail mimicry" rather that preparatory to striking. If restrained, the body was flattened; the tail was curled slightly and waved, though not especially elevated; and